PCOS increases the risk of some types of cancer.
The risk of cancer of the endometrium (pronounced en-doh-MEE-tree-uhm), the inside lining of the uterus, is three times as high for women with PCOS as it is for other women.1 Irregular periods, or a lack of periods, can cause the endometrium to build up and become thick. This thickening can lead to endometrial cancer.2,3,4
Women with PCOS also may be at higher risk for breast cancer and ovarian cancer. Small studies have suggested that a lack of ovulation (anovulation), as occurs with PCOS, is linked with a risk of breast cancer that is three to four times that of women without anovulation.1 In other research, results showed more than a doubling of the risk of ovarian cancer in women with PCOS,5 but scientists have not confirmed these links in large population studies.2,6
Read more about breast cancer.
Learn more about endometrial cancer.
Find more information about ovarian cancer.
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